Patch request to qt 5.9.4

Wed Mar 13 01:12:00 GMT 2019

Tatsuro MATSUOKA wrote:
> ----- Original Message -----
>>> From: Tatsuro MATSUOKA
>> To: Mark Geisert cygwin
>> Cc:
>> Date: 2019年3月12日, Tue 17:25
>> Subject: Re: Patch request to qt 5.9.4
>>>> ----- Original Message -----
>>>>> From: Mark Geisert
>>> To: cygwin
>>> Cc:
>>> Date: 2019年3月12日, Tue 17:04
>>> Subject: Re: Patch request to qt 5.9.4
>>>>>> On 2019年3月12日, Tatsuro MATSUOKA wrote:
>>> [...]
>>>>> From: Mark Geisert
>>>>> If it's not too much trouble, could you show what you tell
>> gnuplot
>>> and how
>>>>> you
>>>>> set up the Qt environment? Are you running gnuplot from inside
>>> qterminal?
>>>>>>>>>> ..mark
>>>> For qt graphics
>>>> gnuplot.exe uses driver process named gnuplot_qt.exe.
>>>>>>>> gnuplot.exe tries connect with gnuplot_qt.exe
>>>> by
>>>>>>>>>>>> qt->socket.connectToServer(server);
>>>>>>>>>>>> in gnuplot.exe code but fails to connect with gnuplot_qt.exe.
>>>>>> Yes, I understand that is happening at a low level. What exactly are you
>>> typing at your keyboard to make gnuplot produce the Qt graphics? I would
>>> like to reproduce your issue on my system; what do I need to do?
>>>>>> Please refer to the specific questions I was asking above.
>>> Thank you,
>>>>>> ..mark
>>>> Gnuplot distrubuted on Cyygwin does not link with Qt.
>> I am distrbuting develoment version of gnuplot with Qt (patched).
>> I have to prepare gnuplot binary without patch.
>>>> I have my web site and I will prepare binaries without stripped debug
>> information
>> and upload on my web.
>>>> I will do it tomorrow morning. (Before job.)
>>>> Tatsuro
>> I have prepared binaries:
> http://tmacchant3.starfree.jp/gnuplot/Eng/cyg_qt_test/
>> test
> From gnplot prompt
>> gnuplot> set terminal qt
> gnuplot> plot x
>> Without Qt patch
>> Could not connect to existing gnuplot_qt. Starting a new one.
>> Warning: slow font initialization
>>>> With Qt patchplot appears

Thank you very much, Tatsuro. I have reproduced your issue and your fix. I 
will dig into the Cygwin internals and let you know what I find out.
H/T to Achim for his comments and offer of help.
..mark
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